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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * fs/cifs/cifsglob.h
3 *
Steve French366781c2008-01-25 10:12:41 +00004 * Copyright (C) International Business Machines Corp., 2002,2008
Linus Torvalds1da177e2005-04-16 15:20:36 -07005 * Author(s): Steve French (sfrench@us.ibm.com)
Jeremy Allison7ee1af72006-08-02 21:56:33 +00006 * Jeremy Allison (jra@samba.org)
Linus Torvalds1da177e2005-04-16 15:20:36 -07007 *
8 * This library is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU Lesser General Public License as published
10 * by the Free Software Foundation; either version 2.1 of the License, or
11 * (at your option) any later version.
12 *
13 * This library is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
16 * the GNU Lesser General Public License for more details.
Steve Frenchd38d8c72007-06-28 19:44:13 +000017 *
Linus Torvalds1da177e2005-04-16 15:20:36 -070018 */
Suresh Jayaramanabd2e442010-06-22 20:52:50 +053019#ifndef _CIFS_GLOB_H
20#define _CIFS_GLOB_H
21
Linus Torvalds1da177e2005-04-16 15:20:36 -070022#include <linux/in.h>
23#include <linux/in6.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090024#include <linux/slab.h>
Pavel Shilovsky2dc7e1c2011-12-26 22:53:34 +040025#include <linux/mempool.h>
Tejun Heo9b646972010-07-20 22:09:02 +020026#include <linux/workqueue.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070027#include "cifs_fs_sb.h"
Steve French442aa312007-09-24 20:25:46 +000028#include "cifsacl.h"
Shirish Pargaonkard2b91522010-10-21 14:25:08 -050029#include <crypto/internal/hash.h>
30#include <linux/scatterlist.h>
Scott Lovenberg8c3a2b42013-08-09 08:47:17 -040031#include <uapi/linux/cifs/cifs_mount.h>
Pavel Shilovskyd60622e2012-05-28 15:19:39 +040032#ifdef CONFIG_CIFS_SMB2
33#include "smb2pdu.h"
34#endif
Shirish Pargaonkard2b91522010-10-21 14:25:08 -050035
Pavel Shilovsky76ec5e32012-09-18 16:20:33 -070036#define CIFS_MAGIC_NUMBER 0xFF534D42 /* the first four bytes of SMB PDUs */
37
Linus Torvalds1da177e2005-04-16 15:20:36 -070038/*
39 * The sizes of various internal tables and strings
40 */
41#define MAX_UID_INFO 16
42#define MAX_SES_INFO 2
43#define MAX_TCON_INFO 4
44
Scott Lovenbergcdf12462013-08-09 08:47:19 -040045#define MAX_TREE_SIZE (2 + CIFS_NI_MAXHOST + 1 + CIFS_MAX_SHARE_LEN + 1)
Linus Torvalds1da177e2005-04-16 15:20:36 -070046
47#define CIFS_MIN_RCV_POOL 4
48
Shirish Pargaonkar2c0c2a02012-05-21 09:20:12 -050049#define MAX_REOPEN_ATT 5 /* these many maximum attempts to reopen a file */
Linus Torvalds1da177e2005-04-16 15:20:36 -070050/*
Suresh Jayaraman6d20e842010-12-01 14:42:28 +053051 * default attribute cache timeout (jiffies)
52 */
53#define CIFS_DEF_ACTIMEO (1 * HZ)
54
55/*
56 * max attribute cache timeout (jiffies) - 2^30
57 */
58#define CIFS_MAX_ACTIMEO (1 << 30)
59
60/*
Linus Torvalds1da177e2005-04-16 15:20:36 -070061 * MAX_REQ is the maximum number of requests that WE will send
Pavel Shilovsky10b9b982012-03-20 12:55:09 +030062 * on one socket concurrently.
Linus Torvalds1da177e2005-04-16 15:20:36 -070063 */
Pavel Shilovsky10b9b982012-03-20 12:55:09 +030064#define CIFS_MAX_REQ 32767
Linus Torvalds1da177e2005-04-16 15:20:36 -070065
Jeff Layton8ecaf672008-12-01 15:23:50 -050066#define RFC1001_NAME_LEN 15
67#define RFC1001_NAME_LEN_WITH_NULL (RFC1001_NAME_LEN + 1)
68
69/* currently length of NIP6_FMT */
70#define SERVER_NAME_LENGTH 40
Linus Torvalds1da177e2005-04-16 15:20:36 -070071#define SERVER_NAME_LEN_WITH_NULL (SERVER_NAME_LENGTH + 1)
72
73/* used to define string lengths for reversing unicode strings */
74/* (256+1)*2 = 514 */
75/* (max path length + 1 for null) * 2 for unicode */
76#define MAX_NAME 514
77
Pavel Shilovsky9094fad2012-07-12 18:30:44 +040078/* SMB echo "timeout" -- FIXME: tunable? */
79#define SMB_ECHO_INTERVAL (60 * HZ)
80
Linus Torvalds1da177e2005-04-16 15:20:36 -070081#include "cifspdu.h"
82
Linus Torvalds1da177e2005-04-16 15:20:36 -070083#ifndef XATTR_DOS_ATTRIB
84#define XATTR_DOS_ATTRIB "user.DOSATTRIB"
85#endif
86
87/*
Linus Torvalds1da177e2005-04-16 15:20:36 -070088 * CIFS vfs client Status information (based on what we know.)
89 */
90
Steve French6c0f6212010-10-23 16:51:40 +000091/* associated with each tcp and smb session */
Linus Torvalds1da177e2005-04-16 15:20:36 -070092enum statusEnum {
93 CifsNew = 0,
94 CifsGood,
95 CifsExiting,
Steve Frenchfd88ce92011-04-12 01:01:14 +000096 CifsNeedReconnect,
97 CifsNeedNegotiate
Linus Torvalds1da177e2005-04-16 15:20:36 -070098};
99
100enum securityEnum {
Jeff Layton515d82f2013-05-26 07:00:58 -0400101 Unspecified = 0, /* not specified */
102 LANMAN, /* Legacy LANMAN auth */
Steve French39798772006-05-31 22:40:51 +0000103 NTLM, /* Legacy NTLM012 auth with NTLM hash */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700104 NTLMv2, /* Legacy NTLM auth with NTLMv2 hash */
Steve Frenchac683922009-05-06 04:16:04 +0000105 RawNTLMSSP, /* NTLMSSP without SPNEGO, NTLMv2 hash */
Steve Frenchc16fefa2008-08-19 19:35:33 +0000106 Kerberos, /* Kerberos via SPNEGO */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700107};
108
Shirish Pargaonkar5f98ca92010-09-18 22:01:58 -0500109struct session_key {
Steve Frenchb609f062007-07-09 07:55:14 +0000110 unsigned int len;
Shirish Pargaonkar21e73392010-10-21 06:42:55 -0500111 char *response;
Steve Frenchb609f062007-07-09 07:55:14 +0000112};
113
Shirish Pargaonkard2b91522010-10-21 14:25:08 -0500114/* crypto security descriptor definition */
115struct sdesc {
116 struct shash_desc shash;
117 char ctx[];
118};
119
Shirish Pargaonkarf7c54452010-10-26 18:10:24 -0500120/* crypto hashing related structure/fields, not specific to a sec mech */
Shirish Pargaonkard2b91522010-10-21 14:25:08 -0500121struct cifs_secmech {
122 struct crypto_shash *hmacmd5; /* hmac-md5 hash function */
123 struct crypto_shash *md5; /* md5 hash function */
Pavel Shilovsky3c1bf7e2012-09-18 16:20:30 -0700124 struct crypto_shash *hmacsha256; /* hmac-sha256 hash function */
Steve French429b46f2013-06-26 23:45:05 -0500125 struct crypto_shash *cmacaes; /* block-cipher based MAC function */
Shirish Pargaonkard2b91522010-10-21 14:25:08 -0500126 struct sdesc *sdeschmacmd5; /* ctxt to generate ntlmv2 hash, CR1 */
127 struct sdesc *sdescmd5; /* ctxt to generate cifs/smb signature */
Pavel Shilovsky3c1bf7e2012-09-18 16:20:30 -0700128 struct sdesc *sdeschmacsha256; /* ctxt to generate smb2 signature */
Steve French429b46f2013-06-26 23:45:05 -0500129 struct sdesc *sdesccmacaes; /* ctxt to generate smb3 signature */
Shirish Pargaonkard2b91522010-10-21 14:25:08 -0500130};
131
Shirish Pargaonkard3686d52010-10-28 09:53:07 -0500132/* per smb session structure/fields */
Shirish Pargaonkard2b91522010-10-21 14:25:08 -0500133struct ntlmssp_auth {
Shirish Pargaonkar5c234aa2013-08-29 08:35:10 -0500134 bool sesskey_per_smbsess; /* whether session key is per smb session */
Shirish Pargaonkard2b91522010-10-21 14:25:08 -0500135 __u32 client_flags; /* sent by client in type 1 ntlmsssp exchange */
136 __u32 server_flags; /* sent by server in type 2 ntlmssp exchange */
137 unsigned char ciphertext[CIFS_CPHTXT_SIZE]; /* sent to server */
Shirish Pargaonkard3686d52010-10-28 09:53:07 -0500138 char cryptkey[CIFS_CRYPTO_KEY_SIZE]; /* used by ntlmssp */
Shirish Pargaonkard2b91522010-10-21 14:25:08 -0500139};
140
Steve French442aa312007-09-24 20:25:46 +0000141struct cifs_cred {
142 int uid;
143 int gid;
144 int mode;
145 int cecount;
146 struct cifs_sid osid;
147 struct cifs_sid gsid;
148 struct cifs_ntace *ntaces;
149 struct cifs_ace *aces;
150};
151
Linus Torvalds1da177e2005-04-16 15:20:36 -0700152/*
153 *****************************************************************
154 * Except the CIFS PDUs themselves all the
155 * globally interesting structs should go here
156 *****************************************************************
157 */
158
Jeff Laytonbf5ea0e2012-09-18 16:20:34 -0700159/*
160 * A smb_rqst represents a complete request to be issued to a server. It's
161 * formed by a kvec array, followed by an array of pages. Page data is assumed
162 * to start at the beginning of the first page.
163 */
164struct smb_rqst {
165 struct kvec *rq_iov; /* array of kvecs */
166 unsigned int rq_nvec; /* number of kvecs in array */
167 struct page **rq_pages; /* pointer to array of page ptrs */
168 unsigned int rq_npages; /* number pages in array */
169 unsigned int rq_pagesz; /* page size to use */
170 unsigned int rq_tailsz; /* length of last page */
171};
172
Jeff Layton23db65f2012-05-15 12:20:51 -0400173enum smb_version {
174 Smb_1 = 1,
Steve Frenchdd446b12012-11-28 23:21:06 -0600175 Smb_20,
Steve French1080ef72011-02-24 18:07:19 +0000176 Smb_21,
Steve Frenche4aa25e2012-10-01 12:26:22 -0500177 Smb_30,
Steve French20b6d8b2013-06-12 22:48:41 -0500178 Smb_302,
Jeff Layton23db65f2012-05-15 12:20:51 -0400179};
180
Jeff Layton121b0462012-05-15 12:21:10 -0400181struct mid_q_entry;
182struct TCP_Server_Info;
Pavel Shilovsky55157df2012-02-28 14:04:17 +0300183struct cifsFileInfo;
Pavel Shilovsky082d0642012-05-17 12:18:21 +0400184struct cifs_ses;
Pavel Shilovsky2e6e02a2012-05-25 11:11:39 +0400185struct cifs_tcon;
Pavel Shilovskyb669f332012-05-27 20:21:53 +0400186struct dfs_info3_param;
Pavel Shilovsky1208ef12012-05-27 17:34:43 +0400187struct cifs_fattr;
Pavel Shilovsky9224dfc2012-05-27 20:39:52 +0400188struct smb_vol;
Pavel Shilovskyfb1214e2012-09-18 16:20:26 -0700189struct cifs_fid;
Pavel Shilovskyfc9c5962012-09-18 16:20:28 -0700190struct cifs_readdata;
Pavel Shilovskyc9de5c82012-09-18 16:20:29 -0700191struct cifs_writedata;
Pavel Shilovskyf9c6e232012-09-18 16:20:29 -0700192struct cifs_io_parms;
Pavel Shilovsky92fc65a2012-09-18 16:20:32 -0700193struct cifs_search_info;
Pavel Shilovsky95a3f2f2012-09-18 16:20:33 -0700194struct cifsInodeInfo;
Pavel Shilovsky226730b2013-07-05 12:00:30 +0400195struct cifs_open_parms;
Jeff Layton121b0462012-05-15 12:21:10 -0400196
Jeff Layton23db65f2012-05-15 12:20:51 -0400197struct smb_version_operations {
Jeff Layton121b0462012-05-15 12:21:10 -0400198 int (*send_cancel)(struct TCP_Server_Info *, void *,
199 struct mid_q_entry *);
Pavel Shilovsky55157df2012-02-28 14:04:17 +0300200 bool (*compare_fids)(struct cifsFileInfo *, struct cifsFileInfo *);
Pavel Shilovsky082d0642012-05-17 12:18:21 +0400201 /* setup request: allocate mid, sign message */
Jeff Laytonfec344e2012-09-18 16:20:35 -0700202 struct mid_q_entry *(*setup_request)(struct cifs_ses *,
203 struct smb_rqst *);
Pavel Shilovsky45740842012-06-01 14:26:18 +0400204 /* setup async request: allocate mid, sign message */
Jeff Laytonfec344e2012-09-18 16:20:35 -0700205 struct mid_q_entry *(*setup_async_request)(struct TCP_Server_Info *,
206 struct smb_rqst *);
Pavel Shilovsky082d0642012-05-17 12:18:21 +0400207 /* check response: verify signature, map error */
208 int (*check_receive)(struct mid_q_entry *, struct TCP_Server_Info *,
209 bool);
Pavel Shilovskya891f0f2012-05-23 16:14:34 +0400210 void (*add_credits)(struct TCP_Server_Info *, const unsigned int,
211 const int);
Pavel Shilovsky45275782012-05-17 17:53:29 +0400212 void (*set_credits)(struct TCP_Server_Info *, const int);
Pavel Shilovskya891f0f2012-05-23 16:14:34 +0400213 int * (*get_credits_field)(struct TCP_Server_Info *, const int);
214 unsigned int (*get_credits)(struct mid_q_entry *);
Pavel Shilovsky88257362012-05-23 14:01:59 +0400215 __u64 (*get_next_mid)(struct TCP_Server_Info *);
Pavel Shilovskyeb378712012-05-17 13:02:51 +0400216 /* data offset from read response message */
217 unsigned int (*read_data_offset)(char *);
218 /* data length from read response message */
219 unsigned int (*read_data_length)(char *);
220 /* map smb to linux error */
221 int (*map_error)(char *, bool);
Pavel Shilovsky8aa26f32012-05-17 13:25:35 +0400222 /* find mid corresponding to the response message */
223 struct mid_q_entry * (*find_mid)(struct TCP_Server_Info *, char *);
224 void (*dump_detail)(void *);
Pavel Shilovsky44c58182012-05-28 14:16:31 +0400225 void (*clear_stats)(struct cifs_tcon *);
226 void (*print_stats)(struct seq_file *m, struct cifs_tcon *);
Steve French769ee6a2013-06-19 14:15:30 -0500227 void (*dump_share_caps)(struct seq_file *, struct cifs_tcon *);
Pavel Shilovsky8aa26f32012-05-17 13:25:35 +0400228 /* verify the message */
229 int (*check_message)(char *, unsigned int);
230 bool (*is_oplock_break)(char *, struct TCP_Server_Info *);
Pavel Shilovsky316cf942012-05-23 14:31:03 +0400231 /* process transaction2 response */
232 bool (*check_trans2)(struct mid_q_entry *, struct TCP_Server_Info *,
233 char *, int);
Pavel Shilovsky286170a2012-05-25 10:43:58 +0400234 /* check if we need to negotiate */
235 bool (*need_neg)(struct TCP_Server_Info *);
236 /* negotiate to the server */
237 int (*negotiate)(const unsigned int, struct cifs_ses *);
Pavel Shilovsky24985c52012-09-18 16:20:28 -0700238 /* set negotiated write size */
239 unsigned int (*negotiate_wsize)(struct cifs_tcon *, struct smb_vol *);
240 /* set negotiated read size */
241 unsigned int (*negotiate_rsize)(struct cifs_tcon *, struct smb_vol *);
Pavel Shilovsky58c45c52012-05-25 10:54:49 +0400242 /* setup smb sessionn */
243 int (*sess_setup)(const unsigned int, struct cifs_ses *,
244 const struct nls_table *);
245 /* close smb session */
246 int (*logoff)(const unsigned int, struct cifs_ses *);
Pavel Shilovsky2e6e02a2012-05-25 11:11:39 +0400247 /* connect to a server share */
248 int (*tree_connect)(const unsigned int, struct cifs_ses *, const char *,
249 struct cifs_tcon *, const struct nls_table *);
250 /* close tree connecion */
251 int (*tree_disconnect)(const unsigned int, struct cifs_tcon *);
Pavel Shilovskyb669f332012-05-27 20:21:53 +0400252 /* get DFS referrals */
253 int (*get_dfs_refer)(const unsigned int, struct cifs_ses *,
254 const char *, struct dfs_info3_param **,
255 unsigned int *, const struct nls_table *, int);
Pavel Shilovskyaf4281d2012-05-27 20:48:35 +0400256 /* informational QFS call */
257 void (*qfs_tcon)(const unsigned int, struct cifs_tcon *);
Pavel Shilovsky68889f22012-05-25 14:40:22 +0400258 /* check if a path is accessible or not */
259 int (*is_path_accessible)(const unsigned int, struct cifs_tcon *,
260 struct cifs_sb_info *, const char *);
Pavel Shilovsky1208ef12012-05-27 17:34:43 +0400261 /* query path data from the server */
262 int (*query_path_info)(const unsigned int, struct cifs_tcon *,
263 struct cifs_sb_info *, const char *,
264 FILE_ALL_INFO *, bool *);
Pavel Shilovsky4ad65042012-09-18 16:20:26 -0700265 /* query file data from the server */
266 int (*query_file_info)(const unsigned int, struct cifs_tcon *,
267 struct cifs_fid *, FILE_ALL_INFO *);
Pavel Shilovsky1208ef12012-05-27 17:34:43 +0400268 /* get server index number */
269 int (*get_srv_inum)(const unsigned int, struct cifs_tcon *,
270 struct cifs_sb_info *, const char *,
271 u64 *uniqueid, FILE_ALL_INFO *);
Pavel Shilovskyd1433412012-09-18 16:20:31 -0700272 /* set size by path */
273 int (*set_path_size)(const unsigned int, struct cifs_tcon *,
274 const char *, __u64, struct cifs_sb_info *, bool);
275 /* set size by file handle */
276 int (*set_file_size)(const unsigned int, struct cifs_tcon *,
277 struct cifsFileInfo *, __u64, bool);
Pavel Shilovsky6bdf6db2012-09-18 16:20:32 -0700278 /* set attributes */
279 int (*set_file_info)(struct inode *, const char *, FILE_BASIC_INFO *,
280 const unsigned int);
Pavel Shilovskyf6d76172012-05-25 14:47:16 +0400281 /* check if we can send an echo or nor */
282 bool (*can_echo)(struct TCP_Server_Info *);
283 /* send echo request */
284 int (*echo)(struct TCP_Server_Info *);
Pavel Shilovskyf4367202012-03-17 11:41:12 +0300285 /* create directory */
286 int (*mkdir)(const unsigned int, struct cifs_tcon *, const char *,
287 struct cifs_sb_info *);
288 /* set info on created directory */
289 void (*mkdir_setinfo)(struct inode *, const char *,
290 struct cifs_sb_info *, struct cifs_tcon *,
291 const unsigned int);
Pavel Shilovskyf958ca52012-07-10 16:14:18 +0400292 /* remove directory */
293 int (*rmdir)(const unsigned int, struct cifs_tcon *, const char *,
294 struct cifs_sb_info *);
Pavel Shilovskyed6875e2012-09-18 16:20:25 -0700295 /* unlink file */
296 int (*unlink)(const unsigned int, struct cifs_tcon *, const char *,
297 struct cifs_sb_info *);
298 /* open, rename and delete file */
299 int (*rename_pending_delete)(const char *, struct dentry *,
300 const unsigned int);
Pavel Shilovsky8ceb9842012-09-18 16:20:30 -0700301 /* send rename request */
302 int (*rename)(const unsigned int, struct cifs_tcon *, const char *,
303 const char *, struct cifs_sb_info *);
Steve Frenchd6e906f2012-09-18 16:20:31 -0700304 /* send create hardlink request */
305 int (*create_hardlink)(const unsigned int, struct cifs_tcon *,
306 const char *, const char *,
307 struct cifs_sb_info *);
Pavel Shilovskyb42bf882013-08-14 19:25:21 +0400308 /* query symlink target */
309 int (*query_symlink)(const unsigned int, struct cifs_tcon *,
310 const char *, char **, struct cifs_sb_info *);
Pavel Shilovskyfb1214e2012-09-18 16:20:26 -0700311 /* open a file for non-posix mounts */
Pavel Shilovsky226730b2013-07-05 12:00:30 +0400312 int (*open)(const unsigned int, struct cifs_open_parms *,
313 __u32 *, FILE_ALL_INFO *);
Pavel Shilovskyfb1214e2012-09-18 16:20:26 -0700314 /* set fid protocol-specific info */
315 void (*set_fid)(struct cifsFileInfo *, struct cifs_fid *, __u32);
Pavel Shilovsky0ff78a22012-09-18 16:20:26 -0700316 /* close a file */
Pavel Shilovsky760ad0c2012-09-25 11:00:07 +0400317 void (*close)(const unsigned int, struct cifs_tcon *,
318 struct cifs_fid *);
Pavel Shilovsky1d8c4c02012-09-18 16:20:27 -0700319 /* send a flush request to the server */
320 int (*flush)(const unsigned int, struct cifs_tcon *, struct cifs_fid *);
Pavel Shilovskyfc9c5962012-09-18 16:20:28 -0700321 /* async read from the server */
322 int (*async_readv)(struct cifs_readdata *);
Pavel Shilovskyc9de5c82012-09-18 16:20:29 -0700323 /* async write to the server */
324 int (*async_writev)(struct cifs_writedata *);
Pavel Shilovskyf9c6e232012-09-18 16:20:29 -0700325 /* sync read from the server */
326 int (*sync_read)(const unsigned int, struct cifsFileInfo *,
327 struct cifs_io_parms *, unsigned int *, char **,
328 int *);
Pavel Shilovskyba9ad7252012-09-18 16:20:30 -0700329 /* sync write to the server */
330 int (*sync_write)(const unsigned int, struct cifsFileInfo *,
331 struct cifs_io_parms *, unsigned int *, struct kvec *,
332 unsigned long);
Pavel Shilovsky92fc65a2012-09-18 16:20:32 -0700333 /* open dir, start readdir */
334 int (*query_dir_first)(const unsigned int, struct cifs_tcon *,
335 const char *, struct cifs_sb_info *,
336 struct cifs_fid *, __u16,
337 struct cifs_search_info *);
338 /* continue readdir */
339 int (*query_dir_next)(const unsigned int, struct cifs_tcon *,
340 struct cifs_fid *,
341 __u16, struct cifs_search_info *srch_inf);
342 /* close dir */
343 int (*close_dir)(const unsigned int, struct cifs_tcon *,
344 struct cifs_fid *);
345 /* calculate a size of SMB message */
346 unsigned int (*calc_smb_size)(void *);
Pavel Shilovsky2e44b282012-09-18 16:20:33 -0700347 /* check for STATUS_PENDING and process it in a positive case */
348 bool (*is_status_pending)(char *, struct TCP_Server_Info *, int);
Pavel Shilovsky95a3f2f2012-09-18 16:20:33 -0700349 /* send oplock break response */
350 int (*oplock_response)(struct cifs_tcon *, struct cifs_fid *,
351 struct cifsInodeInfo *);
Pavel Shilovsky76ec5e32012-09-18 16:20:33 -0700352 /* query remote filesystem */
353 int (*queryfs)(const unsigned int, struct cifs_tcon *,
354 struct kstatfs *);
Pavel Shilovskyd39a4f72012-09-19 06:22:43 -0700355 /* send mandatory brlock to the server */
356 int (*mand_lock)(const unsigned int, struct cifsFileInfo *, __u64,
357 __u64, __u32, int, int, bool);
358 /* unlock range of mandatory locks */
359 int (*mand_unlock_range)(struct cifsFileInfo *, struct file_lock *,
360 const unsigned int);
361 /* push brlocks from the cache to the server */
362 int (*push_mand_locks)(struct cifsFileInfo *);
Pavel Shilovskyb8c32db2012-09-19 06:22:44 -0700363 /* get lease key of the inode */
Pavel Shilovskya41a28b2013-09-04 13:07:41 +0400364 void (*get_lease_key)(struct inode *, struct cifs_fid *);
Pavel Shilovskyb8c32db2012-09-19 06:22:44 -0700365 /* set lease key of the inode */
Pavel Shilovskya41a28b2013-09-04 13:07:41 +0400366 void (*set_lease_key)(struct inode *, struct cifs_fid *);
Pavel Shilovskyb8c32db2012-09-19 06:22:44 -0700367 /* generate new lease key */
Pavel Shilovskya41a28b2013-09-04 13:07:41 +0400368 void (*new_lease_key)(struct cifs_fid *);
Shirish Pargaonkar32811d22013-08-29 08:35:11 -0500369 int (*generate_signingkey)(struct cifs_ses *);
Pavel Shilovsky53ef1012013-09-05 16:11:28 +0400370 int (*calc_signature)(struct smb_rqst *, struct TCP_Server_Info *);
371 int (*query_mf_symlink)(const unsigned char *, char *, unsigned int *,
372 struct cifs_sb_info *, unsigned int);
373 /* if we can do cache read operations */
374 bool (*is_read_op)(__u32);
375 /* set oplock level for the inode */
Pavel Shilovsky42873b02013-09-05 21:30:16 +0400376 void (*set_oplock_level)(struct cifsInodeInfo *, __u32, unsigned int,
377 bool *);
Pavel Shilovskya41a28b2013-09-04 13:07:41 +0400378 /* create lease context buffer for CREATE request */
379 char * (*create_lease_buf)(u8 *, u8);
Pavel Shilovsky42873b02013-09-05 21:30:16 +0400380 /* parse lease context buffer and return oplock/epoch info */
381 __u8 (*parse_lease_buf)(void *, unsigned int *);
Jeff Layton23db65f2012-05-15 12:20:51 -0400382};
383
384struct smb_version_values {
385 char *version_string;
Steve Frenche4aa25e2012-10-01 12:26:22 -0500386 __u16 protocol_id;
387 __u32 req_capabilities;
Pavel Shilovsky106dc532012-02-28 14:23:34 +0300388 __u32 large_lock_type;
389 __u32 exclusive_lock_type;
390 __u32 shared_lock_type;
391 __u32 unlock_lock_type;
Pavel Shilovsky1887f602012-05-17 12:45:31 +0400392 size_t header_size;
393 size_t max_header_size;
Pavel Shilovskyeb378712012-05-17 13:02:51 +0400394 size_t read_rsp_size;
Pavel Shilovsky2dc7e1c2011-12-26 22:53:34 +0400395 __le16 lock_cmd;
Pavel Shilovsky29e20f92012-07-13 13:58:14 +0400396 unsigned int cap_unix;
397 unsigned int cap_nt_find;
398 unsigned int cap_large_files;
Jeff Layton50285882013-06-27 12:45:00 -0400399 __u16 signing_enabled;
400 __u16 signing_required;
Pavel Shilovskya41a28b2013-09-04 13:07:41 +0400401 size_t create_lease_size;
Jeff Layton23db65f2012-05-15 12:20:51 -0400402};
403
Pavel Shilovsky1887f602012-05-17 12:45:31 +0400404#define HEADER_SIZE(server) (server->vals->header_size)
405#define MAX_HEADER_SIZE(server) (server->vals->max_header_size)
406
Steve Frenchf87d39d2011-05-27 03:50:55 +0000407struct smb_vol {
408 char *username;
409 char *password;
410 char *domainname;
411 char *UNC;
Steve Frenchf87d39d2011-05-27 03:50:55 +0000412 char *iocharset; /* local code page for mapping to and from Unicode */
413 char source_rfc1001_name[RFC1001_NAME_LEN_WITH_NULL]; /* clnt nb name */
414 char target_rfc1001_name[RFC1001_NAME_LEN_WITH_NULL]; /* srvr nb name */
Eric W. Biederman3da46562013-02-06 01:37:39 -0800415 kuid_t cred_uid;
416 kuid_t linux_uid;
417 kgid_t linux_gid;
418 kuid_t backupuid;
419 kgid_t backupgid;
Al Viro5206efd2011-07-26 03:22:14 -0400420 umode_t file_mode;
421 umode_t dir_mode;
Jeff Layton1e3cc572013-06-10 17:12:23 -0500422 enum securityEnum sectype; /* sectype requested via mnt opts */
423 bool sign; /* was signing requested via mnt opts? */
Steve Frenchf87d39d2011-05-27 03:50:55 +0000424 bool retry:1;
425 bool intr:1;
426 bool setuids:1;
427 bool override_uid:1;
428 bool override_gid:1;
429 bool dynperm:1;
430 bool noperm:1;
431 bool no_psx_acl:1; /* set if posix acl support should be disabled */
432 bool cifs_acl:1;
Shirish Pargaonkar3d3ea8e2011-09-26 09:56:44 -0500433 bool backupuid_specified; /* mount option backupuid is specified */
434 bool backupgid_specified; /* mount option backupgid is specified */
Steve Frenchf87d39d2011-05-27 03:50:55 +0000435 bool no_xattr:1; /* set if xattr (EA) support should be disabled*/
436 bool server_ino:1; /* use inode numbers from server ie UniqueId */
437 bool direct_io:1;
438 bool strict_io:1; /* strict cache behavior */
439 bool remap:1; /* set to remap seven reserved chars in filenames */
440 bool posix_paths:1; /* unset to not ask for posix pathnames. */
441 bool no_linux_ext:1;
442 bool sfu_emul:1;
443 bool nullauth:1; /* attempt to authenticate with null user */
444 bool nocase:1; /* request case insensitive filenames */
445 bool nobrl:1; /* disable sending byte range locks to srv */
446 bool mand_lock:1; /* send mandatory not posix byte range lock reqs */
447 bool seal:1; /* request transport encryption on share */
448 bool nodfs:1; /* Do not request DFS, even if available */
449 bool local_lease:1; /* check leases only on local system, not remote */
450 bool noblocksnd:1;
451 bool noautotune:1;
452 bool nostrictsync:1; /* do not force expensive SMBflush on every sync */
453 bool fsc:1; /* enable fscache */
454 bool mfsymlinks:1; /* use Minshall+French Symlinks */
455 bool multiuser:1;
Pavel Shilovskyd4ffff12011-05-26 06:02:00 +0000456 bool rwpidforward:1; /* pid forward for read/write operations */
Jeff Laytona0b3df52013-05-24 07:40:59 -0400457 bool nosharesock;
Steve Frenchf87d39d2011-05-27 03:50:55 +0000458 unsigned int rsize;
459 unsigned int wsize;
460 bool sockopt_tcp_nodelay:1;
Steve Frenchf87d39d2011-05-27 03:50:55 +0000461 unsigned long actimeo; /* attribute cache timeout (jiffies) */
Jeff Layton23db65f2012-05-15 12:20:51 -0400462 struct smb_version_operations *ops;
463 struct smb_version_values *vals;
Steve Frenchf87d39d2011-05-27 03:50:55 +0000464 char *prepath;
Jeff Laytonb979aaa2012-11-26 11:09:55 -0500465 struct sockaddr_storage dstaddr; /* destination address */
Steve Frenchf87d39d2011-05-27 03:50:55 +0000466 struct sockaddr_storage srcaddr; /* allow binding to a local IP */
467 struct nls_table *local_nls;
468};
469
Pavel Shilovsky25c7f412011-05-26 23:35:47 +0400470#define CIFS_MOUNT_MASK (CIFS_MOUNT_NO_PERM | CIFS_MOUNT_SET_UID | \
471 CIFS_MOUNT_SERVER_INUM | CIFS_MOUNT_DIRECT_IO | \
472 CIFS_MOUNT_NO_XATTR | CIFS_MOUNT_MAP_SPECIAL_CHR | \
473 CIFS_MOUNT_UNX_EMUL | CIFS_MOUNT_NO_BRL | \
474 CIFS_MOUNT_CIFS_ACL | CIFS_MOUNT_OVERR_UID | \
475 CIFS_MOUNT_OVERR_GID | CIFS_MOUNT_DYNPERM | \
476 CIFS_MOUNT_NOPOSIXBRL | CIFS_MOUNT_NOSSYNC | \
477 CIFS_MOUNT_FSCACHE | CIFS_MOUNT_MF_SYMLINKS | \
Shirish Pargaonkar3d3ea8e2011-09-26 09:56:44 -0500478 CIFS_MOUNT_MULTIUSER | CIFS_MOUNT_STRICT_IO | \
479 CIFS_MOUNT_CIFS_BACKUPUID | CIFS_MOUNT_CIFS_BACKUPGID)
Pavel Shilovsky25c7f412011-05-26 23:35:47 +0400480
481#define CIFS_MS_MASK (MS_RDONLY | MS_MANDLOCK | MS_NOEXEC | MS_NOSUID | \
482 MS_NODEV | MS_SYNCHRONOUS)
483
484struct cifs_mnt_data {
485 struct cifs_sb_info *cifs_sb;
486 struct smb_vol *vol;
487 int flags;
488};
489
Pavel Shilovsky792af7b2012-03-23 14:28:02 -0400490static inline unsigned int
491get_rfc1002_length(void *buf)
492{
493 return be32_to_cpu(*((__be32 *)buf));
494}
495
Pavel Shilovskyec2e4522011-12-27 16:12:43 +0400496static inline void
497inc_rfc1001_len(void *buf, int count)
498{
499 be32_add_cpu((__be32 *)buf, count);
500}
501
Linus Torvalds1da177e2005-04-16 15:20:36 -0700502struct TCP_Server_Info {
Steve French3b795212008-11-13 19:45:32 +0000503 struct list_head tcp_ses_list;
504 struct list_head smb_ses_list;
Jeff Laytone7ddee92008-11-14 13:44:38 -0500505 int srv_count; /* reference counter */
Steve Frencha10faeb22005-08-22 21:38:31 -0700506 /* 15 character server name + 0x20 16th byte indicating type = srv */
Jeff Layton8ecaf672008-12-01 15:23:50 -0500507 char server_RFC1001_name[RFC1001_NAME_LEN_WITH_NULL];
Jeff Layton23db65f2012-05-15 12:20:51 -0400508 struct smb_version_operations *ops;
509 struct smb_version_values *vals;
Jeff Laytonc3dccf42011-01-20 13:36:50 -0500510 enum statusEnum tcpStatus; /* what we think the status is */
Jeff Laytonc359cf32007-11-16 22:22:06 +0000511 char *hostname; /* hostname portion of UNC string */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700512 struct socket *ssocket;
Pavel Shilovskya9f1b852010-12-13 19:08:35 +0300513 struct sockaddr_storage dstaddr;
Ben Greear3eb9a882010-09-01 17:06:02 -0700514 struct sockaddr_storage srcaddr; /* locally bind to this IP */
Rob Landleyf1d0c992011-01-22 15:44:05 -0600515#ifdef CONFIG_NET_NS
516 struct net *net;
517#endif
Steve Frenchd38d8c72007-06-28 19:44:13 +0000518 wait_queue_head_t response_q;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700519 wait_queue_head_t request_q; /* if more than maxmpx to srvr must block*/
520 struct list_head pending_mid_q;
Steve Frenchedf1ae42008-10-29 00:47:57 +0000521 bool noblocksnd; /* use blocking sendmsg */
522 bool noautotune; /* do not autotune send buf sizes */
Steve French6a5fa2362010-01-01 01:28:43 +0000523 bool tcp_nodelay;
Pavel Shilovsky2d86dbc2012-02-06 15:59:18 +0400524 int credits; /* send no more requests at once */
Pavel Shilovskyfc40f9c2012-02-17 17:09:12 +0300525 unsigned int in_flight; /* number of requests on the wire to server */
Pavel Shilovsky2d86dbc2012-02-06 15:59:18 +0400526 spinlock_t req_lock; /* protect the two values above */
Jeff Layton72ca5452008-12-01 07:09:36 -0500527 struct mutex srv_mutex;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700528 struct task_struct *tsk;
529 char server_GUID[16];
Pavel Shilovsky286170a2012-05-25 10:43:58 +0400530 __u16 sec_mode;
Jeff Layton38d77c52013-05-26 07:01:00 -0400531 bool sign; /* is signing enabled on this connection? */
Jeff Laytonc3dccf42011-01-20 13:36:50 -0500532 bool session_estab; /* mark when very first sess is established */
Pavel Shilovsky28ea5292012-05-23 16:18:00 +0400533#ifdef CONFIG_CIFS_SMB2
534 int echo_credits; /* echo reserved slots */
535 int oplock_credits; /* oplock break reserved slots */
536 bool echoes:1; /* enable echoes */
537#endif
Jeff Laytonc3dccf42011-01-20 13:36:50 -0500538 u16 dialect; /* dialect index that server chose */
Pavel Shilovsky10b9b982012-03-20 12:55:09 +0300539 bool oplocks:1; /* enable oplocks */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700540 unsigned int maxReq; /* Clients should submit no more */
541 /* than maxReq distinct unanswered SMBs to the server when using */
542 /* multiplexed reads or writes */
543 unsigned int maxBuf; /* maxBuf specifies the maximum */
544 /* message size the server can send or receive for non-raw SMBs */
Steve French7e90d702011-02-08 23:52:32 +0000545 /* maxBuf is returned by SMB NegotiateProtocol so maxBuf is only 0 */
546 /* when socket is setup (and during reconnect) before NegProt sent */
Steve Frencheca6acf2009-02-20 05:43:09 +0000547 unsigned int max_rw; /* maxRw specifies the maximum */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700548 /* message size the server can send or receive for */
549 /* SMB_COM_WRITE_RAW or SMB_COM_READ_RAW. */
Steve Frencheca6acf2009-02-20 05:43:09 +0000550 unsigned int max_vcs; /* maximum number of smb sessions, at least
551 those that can be specified uniquely with
552 vcnumbers */
Pavel Shilovsky29e20f92012-07-13 13:58:14 +0400553 unsigned int capabilities; /* selective disabling of caps by smb sess */
Steve Frenchde7ed552006-09-30 13:25:52 +0000554 int timeAdj; /* Adjust for difference in server time zone in sec */
Pavel Shilovsky243d04b2012-03-23 14:28:03 -0400555 __u64 CurrentMid; /* multiplex id - rotating counter */
Shirish Pargaonkard3ba50b2010-10-27 15:20:36 -0500556 char cryptkey[CIFS_CRYPTO_KEY_SIZE]; /* used by ntlm, ntlmv2 etc */
Steve Frencha10faeb22005-08-22 21:38:31 -0700557 /* 16th byte of RFC1001 workstation name is always null */
Jeff Layton8ecaf672008-12-01 15:23:50 -0500558 char workstation_RFC1001_name[RFC1001_NAME_LEN_WITH_NULL];
Jeff Laytona0f8b4f2011-01-07 11:30:28 -0500559 __u32 sequence_number; /* for signing, protected by srv_mutex */
Shirish Pargaonkar5f98ca92010-09-18 22:01:58 -0500560 struct session_key session_key;
Steve French3a5ff612006-07-14 22:37:11 +0000561 unsigned long lstrp; /* when we got last response from this server */
Shirish Pargaonkard2b91522010-10-21 14:25:08 -0500562 struct cifs_secmech secmech; /* crypto sec mech functs, descriptors */
Jeff Laytone598d1d82013-05-26 07:00:59 -0400563#define CIFS_NEGFLAVOR_LANMAN 0 /* wct == 13, LANMAN */
564#define CIFS_NEGFLAVOR_UNENCAP 1 /* wct == 17, but no ext_sec */
565#define CIFS_NEGFLAVOR_EXTENDED 2 /* wct == 17, ext_sec bit set */
566 char negflavor; /* NEGOTIATE response flavor */
Jeff Layton26efa0b2010-04-24 07:57:49 -0400567 /* extended security flavors that server supports */
Jeff Laytonc3dccf42011-01-20 13:36:50 -0500568 bool sec_ntlmssp; /* supports NTLMSSP */
569 bool sec_kerberosu2u; /* supports U2U Kerberos */
Jeff Layton26efa0b2010-04-24 07:57:49 -0400570 bool sec_kerberos; /* supports plain Kerberos */
571 bool sec_mskerberos; /* supports legacy MS Kerberos */
Jeff Layton2a37ef92011-10-19 15:29:23 -0400572 bool large_buf; /* is current buffer large? */
Jeff Laytonc74093b2011-01-11 07:24:23 -0500573 struct delayed_work echo; /* echo ping workqueue job */
Jeff Layton1041e3f2011-10-19 15:28:27 -0400574 struct kvec *iov; /* reusable kvec array for receives */
575 unsigned int nr_iov; /* number of kvecs in array */
Jeff Layton2a37ef92011-10-19 15:29:23 -0400576 char *smallbuf; /* pointer to current "small" buffer */
577 char *bigbuf; /* pointer to current "big" buffer */
578 unsigned int total_read; /* total amount of data read in this pass */
Suresh Jayaraman488f1d2d2010-07-05 18:12:15 +0530579#ifdef CONFIG_CIFS_FSCACHE
580 struct fscache_cookie *fscache; /* client index cache cookie */
581#endif
Jeff Laytonc3dccf42011-01-20 13:36:50 -0500582#ifdef CONFIG_CIFS_STATS2
Steve French789e6662011-08-09 18:44:44 +0000583 atomic_t in_send; /* requests trying to send */
Jeff Laytonc3dccf42011-01-20 13:36:50 -0500584 atomic_t num_waiters; /* blocked waiting to get in sendrecv */
585#endif
Pavel Shilovskyec2e4522011-12-27 16:12:43 +0400586#ifdef CONFIG_CIFS_SMB2
587 unsigned int max_read;
588 unsigned int max_write;
589#endif /* CONFIG_CIFS_SMB2 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700590};
591
Pavel Shilovskyfc40f9c2012-02-17 17:09:12 +0300592static inline unsigned int
593in_flight(struct TCP_Server_Info *server)
594{
595 unsigned int num;
596 spin_lock(&server->req_lock);
597 num = server->in_flight;
598 spin_unlock(&server->req_lock);
599 return num;
600}
601
Pavel Shilovsky2d86dbc2012-02-06 15:59:18 +0400602static inline bool
Pavel Shilovskybc205ed2012-03-15 13:22:27 +0300603has_credits(struct TCP_Server_Info *server, int *credits)
Pavel Shilovskyfc40f9c2012-02-17 17:09:12 +0300604{
Pavel Shilovsky2d86dbc2012-02-06 15:59:18 +0400605 int num;
Pavel Shilovskyfc40f9c2012-02-17 17:09:12 +0300606 spin_lock(&server->req_lock);
Pavel Shilovskybc205ed2012-03-15 13:22:27 +0300607 num = *credits;
Pavel Shilovskyfc40f9c2012-02-17 17:09:12 +0300608 spin_unlock(&server->req_lock);
Pavel Shilovsky2d86dbc2012-02-06 15:59:18 +0400609 return num > 0;
Pavel Shilovskyfc40f9c2012-02-17 17:09:12 +0300610}
611
Pavel Shilovsky45275782012-05-17 17:53:29 +0400612static inline void
Pavel Shilovskya891f0f2012-05-23 16:14:34 +0400613add_credits(struct TCP_Server_Info *server, const unsigned int add,
614 const int optype)
Pavel Shilovsky45275782012-05-17 17:53:29 +0400615{
Pavel Shilovskya891f0f2012-05-23 16:14:34 +0400616 server->ops->add_credits(server, add, optype);
Pavel Shilovsky45275782012-05-17 17:53:29 +0400617}
618
619static inline void
620set_credits(struct TCP_Server_Info *server, const int val)
621{
622 server->ops->set_credits(server, val);
623}
624
Pavel Shilovsky88257362012-05-23 14:01:59 +0400625static inline __u64
626get_next_mid(struct TCP_Server_Info *server)
627{
628 return server->ops->get_next_mid(server);
629}
630
Linus Torvalds1da177e2005-04-16 15:20:36 -0700631/*
Pavel Shilovsky24985c52012-09-18 16:20:28 -0700632 * When the server supports very large reads and writes via POSIX extensions,
633 * we can allow up to 2^24-1, minus the size of a READ/WRITE_AND_X header, not
634 * including the RFC1001 length.
635 *
636 * Note that this might make for "interesting" allocation problems during
637 * writeback however as we have to allocate an array of pointers for the
638 * pages. A 16M write means ~32kb page array with PAGE_CACHE_SIZE == 4096.
639 *
640 * For reads, there is a similar problem as we need to allocate an array
641 * of kvecs to handle the receive, though that should only need to be done
642 * once.
643 */
644#define CIFS_MAX_WSIZE ((1<<24) - 1 - sizeof(WRITE_REQ) + 4)
645#define CIFS_MAX_RSIZE ((1<<24) - sizeof(READ_RSP) + 4)
646
647/*
648 * When the server doesn't allow large posix writes, only allow a rsize/wsize
649 * of 2^17-1 minus the size of the call header. That allows for a read or
650 * write up to the maximum size described by RFC1002.
651 */
652#define CIFS_MAX_RFC1002_WSIZE ((1<<17) - 1 - sizeof(WRITE_REQ) + 4)
653#define CIFS_MAX_RFC1002_RSIZE ((1<<17) - 1 - sizeof(READ_RSP) + 4)
654
655/*
656 * The default wsize is 1M. find_get_pages seems to return a maximum of 256
657 * pages in a single call. With PAGE_CACHE_SIZE == 4k, this means we can fill
658 * a single wsize request with a single call.
659 */
660#define CIFS_DEFAULT_IOSIZE (1024 * 1024)
661
662/*
663 * Windows only supports a max of 60kb reads and 65535 byte writes. Default to
664 * those values when posix extensions aren't in force. In actuality here, we
665 * use 65536 to allow for a write that is a multiple of 4k. Most servers seem
666 * to be ok with the extra byte even though Windows doesn't send writes that
667 * are that large.
668 *
669 * Citation:
670 *
671 * http://blogs.msdn.com/b/openspecification/archive/2009/04/10/smb-maximum-transmit-buffer-size-and-performance-tuning.aspx
672 */
673#define CIFS_DEFAULT_NON_POSIX_RSIZE (60 * 1024)
674#define CIFS_DEFAULT_NON_POSIX_WSIZE (65536)
675
676/*
Rob Landleyf1d0c992011-01-22 15:44:05 -0600677 * Macros to allow the TCP_Server_Info->net field and related code to drop out
678 * when CONFIG_NET_NS isn't set.
679 */
680
681#ifdef CONFIG_NET_NS
682
683static inline struct net *cifs_net_ns(struct TCP_Server_Info *srv)
684{
685 return srv->net;
686}
687
688static inline void cifs_set_net_ns(struct TCP_Server_Info *srv, struct net *net)
689{
690 srv->net = net;
691}
692
693#else
694
695static inline struct net *cifs_net_ns(struct TCP_Server_Info *srv)
696{
697 return &init_net;
698}
699
700static inline void cifs_set_net_ns(struct TCP_Server_Info *srv, struct net *net)
701{
702}
703
704#endif
705
706/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700707 * Session structure. One of these for each uid session with a particular host
708 */
Steve French96daf2b2011-05-27 04:34:02 +0000709struct cifs_ses {
Jeff Layton14fbf502008-11-14 13:53:46 -0500710 struct list_head smb_ses_list;
Steve French3b795212008-11-13 19:45:32 +0000711 struct list_head tcon_list;
Steve Frenchd7b619c2010-02-25 05:36:46 +0000712 struct mutex session_mutex;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700713 struct TCP_Server_Info *server; /* pointer to server info */
Jeff Layton14fbf502008-11-14 13:53:46 -0500714 int ses_count; /* reference counter */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700715 enum statusEnum status;
Steve French750d1152006-06-27 06:28:30 +0000716 unsigned overrideSecFlg; /* if non-zero override global sec flags */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700717 __u16 ipc_tid; /* special tid for connection to IPC share */
Steve Frencheca6acf2009-02-20 05:43:09 +0000718 __u16 vcnum;
Steve Frenchad009ac2005-04-28 22:41:05 -0700719 char *serverOS; /* name of operating system underlying server */
720 char *serverNOS; /* name of network operating system of server */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700721 char *serverDomain; /* security realm of server */
Pavel Shilovsky286170a2012-05-25 10:43:58 +0400722 __u64 Suid; /* remote smb uid */
Eric W. Biederman64ed39d2013-02-06 02:30:39 -0800723 kuid_t linux_uid; /* overriding owner of files on the mount */
724 kuid_t cred_uid; /* owner of credentials */
Pavel Shilovsky29e20f92012-07-13 13:58:14 +0400725 unsigned int capabilities;
Steve Frenchd38d8c72007-06-28 19:44:13 +0000726 char serverName[SERVER_NAME_LEN_WITH_NULL * 2]; /* BB make bigger for
Steve Frenchad009ac2005-04-28 22:41:05 -0700727 TCP names - will ipv6 and sctp addresses fit? */
Steve French34c87902011-03-01 05:02:57 +0000728 char *user_name; /* must not be null except during init of sess
729 and after mount option parsing we fill it */
Steve Frenchd38d8c72007-06-28 19:44:13 +0000730 char *domainName;
731 char *password;
Shirish Pargaonkar5d0d2882010-10-13 18:15:00 -0500732 struct session_key auth_key;
Shirish Pargaonkard3686d52010-10-28 09:53:07 -0500733 struct ntlmssp_auth *ntlmssp; /* ciphertext, flags, server challenge */
Jeff Layton28e11bd2013-05-26 07:01:00 -0400734 enum securityEnum sectype; /* what security flavor was specified? */
735 bool sign; /* is signing required? */
Steve French3b795212008-11-13 19:45:32 +0000736 bool need_reconnect:1; /* connection reset, uid now invalid */
Pavel Shilovsky5478f9b2011-12-27 16:22:00 +0400737#ifdef CONFIG_CIFS_SMB2
738 __u16 session_flags;
Shirish Pargaonkar32811d22013-08-29 08:35:11 -0500739 char smb3signingkey[SMB3_SIGN_KEY_SIZE]; /* for signing smb3 packets */
Pavel Shilovsky5478f9b2011-12-27 16:22:00 +0400740#endif /* CONFIG_CIFS_SMB2 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700741};
Pavel Shilovsky233839b2012-09-19 06:22:45 -0700742
Pavel Shilovsky29e20f92012-07-13 13:58:14 +0400743static inline bool
744cap_unix(struct cifs_ses *ses)
745{
746 return ses->server->vals->cap_unix & ses->capabilities;
747}
748
Linus Torvalds1da177e2005-04-16 15:20:36 -0700749/*
750 * there is one of these for each connection to a resource on a particular
Steve Frenchd38d8c72007-06-28 19:44:13 +0000751 * session
Linus Torvalds1da177e2005-04-16 15:20:36 -0700752 */
Steve French96daf2b2011-05-27 04:34:02 +0000753struct cifs_tcon {
Jeff Laytonf1987b42008-11-15 11:12:47 -0500754 struct list_head tcon_list;
755 int tc_count;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700756 struct list_head openFileList;
Steve French96daf2b2011-05-27 04:34:02 +0000757 struct cifs_ses *ses; /* pointer to session associated with */
Steve French254e55e2006-06-04 05:53:15 +0000758 char treeName[MAX_TREE_SIZE + 1]; /* UNC name of resource in ASCII */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700759 char *nativeFileSystem;
Jeff Layton00e485b2008-12-05 20:41:21 -0500760 char *password; /* for share-level security */
Pavel Shilovskyfaaf9462011-12-27 16:04:00 +0400761 __u32 tid; /* The 4 byte tree id */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700762 __u16 Flags; /* optional support bits */
763 enum statusEnum tidStatus;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700764#ifdef CONFIG_CIFS_STATS
765 atomic_t num_smbs_sent;
Pavel Shilovsky44c58182012-05-28 14:16:31 +0400766 union {
767 struct {
768 atomic_t num_writes;
769 atomic_t num_reads;
770 atomic_t num_flushes;
771 atomic_t num_oplock_brks;
772 atomic_t num_opens;
773 atomic_t num_closes;
774 atomic_t num_deletes;
775 atomic_t num_mkdirs;
776 atomic_t num_posixopens;
777 atomic_t num_posixmkdirs;
778 atomic_t num_rmdirs;
779 atomic_t num_renames;
780 atomic_t num_t2renames;
781 atomic_t num_ffirst;
782 atomic_t num_fnext;
783 atomic_t num_fclose;
784 atomic_t num_hardlinks;
785 atomic_t num_symlinks;
786 atomic_t num_locks;
787 atomic_t num_acl_get;
788 atomic_t num_acl_set;
789 } cifs_stats;
Pavel Shilovskyd60622e2012-05-28 15:19:39 +0400790#ifdef CONFIG_CIFS_SMB2
791 struct {
792 atomic_t smb2_com_sent[NUMBER_OF_SMB2_COMMANDS];
793 atomic_t smb2_com_failed[NUMBER_OF_SMB2_COMMANDS];
794 } smb2_stats;
795#endif /* CONFIG_CIFS_SMB2 */
Pavel Shilovsky44c58182012-05-28 14:16:31 +0400796 } stats;
Steve Frencha5a2b482005-08-20 21:42:53 -0700797#ifdef CONFIG_CIFS_STATS2
798 unsigned long long time_writes;
799 unsigned long long time_reads;
800 unsigned long long time_opens;
801 unsigned long long time_deletes;
802 unsigned long long time_closes;
803 unsigned long long time_mkdirs;
804 unsigned long long time_rmdirs;
805 unsigned long long time_renames;
806 unsigned long long time_t2renames;
807 unsigned long long time_ffirst;
808 unsigned long long time_fnext;
809 unsigned long long time_fclose;
810#endif /* CONFIG_CIFS_STATS2 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700811 __u64 bytes_read;
812 __u64 bytes_written;
813 spinlock_t stat_lock;
Steve Frencha5a2b482005-08-20 21:42:53 -0700814#endif /* CONFIG_CIFS_STATS */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700815 FILE_SYSTEM_DEVICE_INFO fsDevInfo;
Steve French254e55e2006-06-04 05:53:15 +0000816 FILE_SYSTEM_ATTRIBUTE_INFO fsAttrInfo; /* ok if fs name truncated */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700817 FILE_SYSTEM_UNIX_INFO fsUnixInfo;
Steve French4b18f2a2008-04-29 00:06:05 +0000818 bool ipc:1; /* set if connection to IPC$ eg for RPC/PIPES */
819 bool retry:1;
820 bool nocase:1;
Steve French95b1cb92008-05-15 16:44:38 +0000821 bool seal:1; /* transport encryption for this mounted share */
Steve French4b18f2a2008-04-29 00:06:05 +0000822 bool unix_ext:1; /* if false disable Linux extensions to CIFS protocol
Steve Frenchc18c8422007-07-18 23:21:09 +0000823 for this mount even if server would support */
Steve French84210e92008-10-23 04:42:37 +0000824 bool local_lease:1; /* check leases (only) on local system not remote */
Steve French64cc2c62009-03-04 19:54:08 +0000825 bool broken_posix_open; /* e.g. Samba server versions < 3.3.2, 3.2.9 */
Steve French3b795212008-11-13 19:45:32 +0000826 bool need_reconnect:1; /* connection reset, tid now invalid */
Pavel Shilovskyfaaf9462011-12-27 16:04:00 +0400827#ifdef CONFIG_CIFS_SMB2
828 bool print:1; /* set if connection to printer share */
829 bool bad_network_name:1; /* set if ret status STATUS_BAD_NETWORK_NAME */
Steve French769ee6a2013-06-19 14:15:30 -0500830 __le32 capabilities;
Pavel Shilovskyfaaf9462011-12-27 16:04:00 +0400831 __u32 share_flags;
832 __u32 maximal_access;
833 __u32 vol_serial_number;
834 __le64 vol_create_time;
835#endif /* CONFIG_CIFS_SMB2 */
Suresh Jayaramand03382c2010-07-05 18:12:27 +0530836#ifdef CONFIG_CIFS_FSCACHE
837 u64 resource_id; /* server resource id */
838 struct fscache_cookie *fscache; /* cookie for share */
839#endif
Pavel Shilovsky233839b2012-09-19 06:22:45 -0700840 struct list_head pending_opens; /* list of incomplete opens */
Steve Frenchc18c8422007-07-18 23:21:09 +0000841 /* BB add field for back pointer to sb struct(s)? */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700842};
843
844/*
Jeff Layton7ffec372010-09-29 19:51:11 -0400845 * This is a refcounted and timestamped container for a tcon pointer. The
846 * container holds a tcon reference. It is considered safe to free one of
847 * these when the tl_count goes to 0. The tl_time is the time of the last
848 * "get" on the container.
849 */
850struct tcon_link {
Jeff Laytonb647c352010-10-28 11:16:44 -0400851 struct rb_node tl_rbnode;
Eric W. Biederman6d4a0832013-02-06 01:48:56 -0800852 kuid_t tl_uid;
Jeff Layton9d002df2010-10-06 19:51:11 -0400853 unsigned long tl_flags;
854#define TCON_LINK_MASTER 0
855#define TCON_LINK_PENDING 1
856#define TCON_LINK_IN_TREE 2
857 unsigned long tl_time;
858 atomic_t tl_count;
Steve French96daf2b2011-05-27 04:34:02 +0000859 struct cifs_tcon *tl_tcon;
Jeff Layton7ffec372010-09-29 19:51:11 -0400860};
861
Jeff Layton9d002df2010-10-06 19:51:11 -0400862extern struct tcon_link *cifs_sb_tlink(struct cifs_sb_info *cifs_sb);
Jeff Layton7ffec372010-09-29 19:51:11 -0400863
Steve French96daf2b2011-05-27 04:34:02 +0000864static inline struct cifs_tcon *
Jeff Layton7ffec372010-09-29 19:51:11 -0400865tlink_tcon(struct tcon_link *tlink)
866{
Jeff Layton9d002df2010-10-06 19:51:11 -0400867 return tlink->tl_tcon;
Jeff Layton7ffec372010-09-29 19:51:11 -0400868}
869
Jeff Layton9d002df2010-10-06 19:51:11 -0400870extern void cifs_put_tlink(struct tcon_link *tlink);
Jeff Layton7ffec372010-09-29 19:51:11 -0400871
Jeff Layton13cfb732010-09-29 19:51:11 -0400872static inline struct tcon_link *
873cifs_get_tlink(struct tcon_link *tlink)
874{
Jeff Layton9d002df2010-10-06 19:51:11 -0400875 if (tlink && !IS_ERR(tlink))
876 atomic_inc(&tlink->tl_count);
Jeff Layton13cfb732010-09-29 19:51:11 -0400877 return tlink;
878}
879
Jeff Layton7ffec372010-09-29 19:51:11 -0400880/* This function is always expected to succeed */
Steve French96daf2b2011-05-27 04:34:02 +0000881extern struct cifs_tcon *cifs_sb_master_tcon(struct cifs_sb_info *cifs_sb);
Jeff Layton7ffec372010-09-29 19:51:11 -0400882
Pavel Shilovsky233839b2012-09-19 06:22:45 -0700883#define CIFS_OPLOCK_NO_CHANGE 0xfe
884
885struct cifs_pending_open {
886 struct list_head olist;
887 struct tcon_link *tlink;
888 __u8 lease_key[16];
889 __u32 oplock;
890};
891
Jeff Layton7ffec372010-09-29 19:51:11 -0400892/*
Jeremy Allison7ee1af72006-08-02 21:56:33 +0000893 * This info hangs off the cifsFileInfo structure, pointed to by llist.
894 * This is used to track byte stream locks on the file
Linus Torvalds1da177e2005-04-16 15:20:36 -0700895 */
896struct cifsLockInfo {
Jeremy Allison7ee1af72006-08-02 21:56:33 +0000897 struct list_head llist; /* pointer to next cifsLockInfo */
Pavel Shilovsky85160e02011-10-22 15:33:29 +0400898 struct list_head blist; /* pointer to locks blocked on this */
899 wait_queue_head_t block_q;
Jeremy Allison7ee1af72006-08-02 21:56:33 +0000900 __u64 offset;
901 __u64 length;
Pavel Shilovsky03776f42010-08-17 11:26:00 +0400902 __u32 pid;
Pavel Shilovsky04a6aa82012-02-28 14:16:55 +0300903 __u32 type;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700904};
905
906/*
907 * One of these for each open instance of a file
908 */
909struct cifs_search_info {
910 loff_t index_of_last_entry;
911 __u16 entries_in_buffer;
912 __u16 info_level;
913 __u32 resume_key;
Steve Frenchd38d8c72007-06-28 19:44:13 +0000914 char *ntwrk_buf_start;
915 char *srch_entries_start;
Steve French0752f152008-10-07 20:03:33 +0000916 char *last_entry;
Christoph Hellwigeaf35b12011-07-16 15:24:37 -0400917 const char *presume_name;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700918 unsigned int resume_name_len;
Steve French4b18f2a2008-04-29 00:06:05 +0000919 bool endOfSearch:1;
920 bool emptyDir:1;
921 bool unicode:1;
922 bool smallBuf:1; /* so we know which buf_release function to call */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700923};
924
Pavel Shilovsky226730b2013-07-05 12:00:30 +0400925struct cifs_open_parms {
926 struct cifs_tcon *tcon;
927 struct cifs_sb_info *cifs_sb;
928 int disposition;
929 int desired_access;
930 int create_options;
931 const char *path;
932 struct cifs_fid *fid;
Pavel Shilovsky9cbc0b72013-07-09 18:40:58 +0400933 bool reconnect:1;
Pavel Shilovsky226730b2013-07-05 12:00:30 +0400934};
935
Pavel Shilovsky4b4de762012-09-18 16:20:26 -0700936struct cifs_fid {
937 __u16 netfid;
Pavel Shilovskyf0df7372012-09-18 16:20:26 -0700938#ifdef CONFIG_CIFS_SMB2
939 __u64 persistent_fid; /* persist file id for smb2 */
940 __u64 volatile_fid; /* volatile file id for smb2 */
Pavel Shilovskyb8c32db2012-09-19 06:22:44 -0700941 __u8 lease_key[SMB2_LEASE_KEY_SIZE]; /* lease key for smb2 */
Pavel Shilovskyf0df7372012-09-18 16:20:26 -0700942#endif
Pavel Shilovsky233839b2012-09-19 06:22:45 -0700943 struct cifs_pending_open *pending_open;
Pavel Shilovsky42873b02013-09-05 21:30:16 +0400944 unsigned int epoch;
945 bool purge_cache;
Pavel Shilovsky4b4de762012-09-18 16:20:26 -0700946};
947
Pavel Shilovskyf45d3412012-09-19 06:22:43 -0700948struct cifs_fid_locks {
949 struct list_head llist;
950 struct cifsFileInfo *cfile; /* fid that owns locks */
951 struct list_head locks; /* locks held by fid above */
952};
953
Linus Torvalds1da177e2005-04-16 15:20:36 -0700954struct cifsFileInfo {
955 struct list_head tlist; /* pointer to next fid owned by tcon */
956 struct list_head flist; /* next fid (file instance) for this inode */
Pavel Shilovskyf45d3412012-09-19 06:22:43 -0700957 struct cifs_fid_locks *llist; /* brlocks held by this fid */
Eric W. Biedermanfef59fd2013-02-06 02:23:02 -0800958 kuid_t uid; /* allows finding which FileInfo structure */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700959 __u32 pid; /* process id who opened file */
Pavel Shilovsky4b4de762012-09-18 16:20:26 -0700960 struct cifs_fid fid; /* file id from remote */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700961 /* BB add lock scope info here if needed */ ;
962 /* lock scope id (0 if none) */
Jeff Laytona5e18bc2010-10-11 15:07:18 -0400963 struct dentry *dentry;
Jeff Layton15886172010-10-15 15:33:59 -0400964 unsigned int f_flags;
Jeff Layton13cfb732010-09-29 19:51:11 -0400965 struct tcon_link *tlink;
Steve French4b18f2a2008-04-29 00:06:05 +0000966 bool invalidHandle:1; /* file closed via session abend */
Jeff Layton3bc303c2009-09-21 06:47:50 -0400967 bool oplock_break_cancelled:1;
Steve French6c0f6212010-10-23 16:51:40 +0000968 int count; /* refcount protected by cifs_file_list_lock */
Steve Frencha6ce4932009-04-09 01:14:32 +0000969 struct mutex fh_mutex; /* prevents reopen race after dead ses*/
Linus Torvalds1da177e2005-04-16 15:20:36 -0700970 struct cifs_search_info srch_inf;
Tejun Heo9b646972010-07-20 22:09:02 +0200971 struct work_struct oplock_break; /* work for oplock breaks */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700972};
973
Pavel Shilovskyfa2989f2011-05-26 10:01:59 +0400974struct cifs_io_parms {
975 __u16 netfid;
Pavel Shilovsky09a47072012-09-18 16:20:29 -0700976#ifdef CONFIG_CIFS_SMB2
977 __u64 persistent_fid; /* persist file id for smb2 */
978 __u64 volatile_fid; /* volatile file id for smb2 */
979#endif
Pavel Shilovskyfa2989f2011-05-26 10:01:59 +0400980 __u32 pid;
981 __u64 offset;
982 unsigned int length;
Steve French96daf2b2011-05-27 04:34:02 +0000983 struct cifs_tcon *tcon;
Pavel Shilovskyfa2989f2011-05-26 10:01:59 +0400984};
985
Pavel Shilovsky09a47072012-09-18 16:20:29 -0700986struct cifs_readdata;
987
988/* asynchronous read support */
989struct cifs_readdata {
990 struct kref refcount;
991 struct list_head list;
992 struct completion done;
993 struct cifsFileInfo *cfile;
994 struct address_space *mapping;
995 __u64 offset;
996 unsigned int bytes;
997 pid_t pid;
998 int result;
Pavel Shilovsky09a47072012-09-18 16:20:29 -0700999 struct work_struct work;
Jeff Layton8321fec2012-09-19 06:22:32 -07001000 int (*read_into_pages)(struct TCP_Server_Info *server,
1001 struct cifs_readdata *rdata,
1002 unsigned int len);
Jeff Layton58195752012-09-19 06:22:34 -07001003 struct kvec iov;
Jeff Layton8321fec2012-09-19 06:22:32 -07001004 unsigned int pagesz;
1005 unsigned int tailsz;
Jeff Laytonc5fab6f2012-09-19 06:22:30 -07001006 unsigned int nr_pages;
1007 struct page *pages[];
Pavel Shilovsky09a47072012-09-18 16:20:29 -07001008};
1009
Pavel Shilovsky33319142012-09-18 16:20:29 -07001010struct cifs_writedata;
1011
1012/* asynchronous write support */
1013struct cifs_writedata {
1014 struct kref refcount;
1015 struct list_head list;
1016 struct completion done;
1017 enum writeback_sync_modes sync_mode;
1018 struct work_struct work;
1019 struct cifsFileInfo *cfile;
1020 __u64 offset;
1021 pid_t pid;
1022 unsigned int bytes;
1023 int result;
Jeff Laytoneddb0792012-09-18 16:20:35 -07001024 unsigned int pagesz;
1025 unsigned int tailsz;
Pavel Shilovsky33319142012-09-18 16:20:29 -07001026 unsigned int nr_pages;
1027 struct page *pages[1];
1028};
1029
Jeff Layton5f6dbc92010-10-15 15:34:06 -04001030/*
1031 * Take a reference on the file private data. Must be called with
1032 * cifs_file_list_lock held.
1033 */
Jeff Layton764a1b12012-07-25 14:59:54 -04001034static inline void
1035cifsFileInfo_get_locked(struct cifsFileInfo *cifs_file)
Dave Kleikamp6ab409b2009-08-31 11:07:12 -04001036{
Jeff Layton5f6dbc92010-10-15 15:34:06 -04001037 ++cifs_file->count;
Dave Kleikamp6ab409b2009-08-31 11:07:12 -04001038}
1039
Jeff Layton764a1b12012-07-25 14:59:54 -04001040struct cifsFileInfo *cifsFileInfo_get(struct cifsFileInfo *cifs_file);
Jeff Laytonb33879a2010-10-15 15:34:04 -04001041void cifsFileInfo_put(struct cifsFileInfo *cifs_file);
Dave Kleikamp6ab409b2009-08-31 11:07:12 -04001042
Pavel Shilovsky18cceb62013-09-05 13:01:06 +04001043#define CIFS_CACHE_READ_FLG 1
1044#define CIFS_CACHE_HANDLE_FLG 2
Pavel Shilovsky42873b02013-09-05 21:30:16 +04001045#define CIFS_CACHE_RH_FLG (CIFS_CACHE_READ_FLG | CIFS_CACHE_HANDLE_FLG)
Pavel Shilovsky18cceb62013-09-05 13:01:06 +04001046#define CIFS_CACHE_WRITE_FLG 4
Pavel Shilovsky42873b02013-09-05 21:30:16 +04001047#define CIFS_CACHE_RW_FLG (CIFS_CACHE_READ_FLG | CIFS_CACHE_WRITE_FLG)
1048#define CIFS_CACHE_RHW_FLG (CIFS_CACHE_RW_FLG | CIFS_CACHE_HANDLE_FLG)
Pavel Shilovsky18cceb62013-09-05 13:01:06 +04001049
1050#define CIFS_CACHE_READ(cinode) (cinode->oplock & CIFS_CACHE_READ_FLG)
Pavel Shilovsky53ef1012013-09-05 16:11:28 +04001051#define CIFS_CACHE_HANDLE(cinode) (cinode->oplock & CIFS_CACHE_HANDLE_FLG)
Pavel Shilovsky18cceb62013-09-05 13:01:06 +04001052#define CIFS_CACHE_WRITE(cinode) (cinode->oplock & CIFS_CACHE_WRITE_FLG)
1053
Linus Torvalds1da177e2005-04-16 15:20:36 -07001054/*
1055 * One of these for each file inode
1056 */
1057
1058struct cifsInodeInfo {
Pavel Shilovskyd59dad22011-09-22 09:53:59 +04001059 bool can_cache_brlcks;
Pavel Shilovskyf45d3412012-09-19 06:22:43 -07001060 struct list_head llist; /* locks helb by this inode */
Pavel Shilovsky1b4b55a2012-09-19 06:22:44 -07001061 struct rw_semaphore lock_sem; /* protect the fields above */
Steve Frenchd38d8c72007-06-28 19:44:13 +00001062 /* BB add in lists for dirty pages i.e. write caching info for oplock */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001063 struct list_head openFileList;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001064 __u32 cifsAttrs; /* e.g. DOS archive bit, sparse, compressed, system */
Pavel Shilovsky18cceb62013-09-05 13:01:06 +04001065 unsigned int oplock; /* oplock/lease level we have */
Pavel Shilovsky42873b02013-09-05 21:30:16 +04001066 unsigned int epoch; /* used to track lease state changes */
Jeff Laytonaae62fd2011-01-20 13:36:50 -05001067 bool delete_pending; /* DELETE_ON_CLOSE is set */
1068 bool invalid_mapping; /* pagecache is invalid */
1069 unsigned long time; /* jiffies of last update of inode */
Jeff Layton597b0272012-03-23 14:40:56 -04001070 u64 server_eof; /* current file size on server -- protected by i_lock */
Jeff Laytoncc0bad72009-06-25 00:56:52 -04001071 u64 uniqueid; /* server inode number */
Jeff Layton20054bd2011-01-07 11:30:27 -05001072 u64 createtime; /* creation time on server */
Pavel Shilovskyb8c32db2012-09-19 06:22:44 -07001073#ifdef CONFIG_CIFS_SMB2
1074 __u8 lease_key[SMB2_LEASE_KEY_SIZE]; /* lease key for this inode */
1075#endif
Suresh Jayaraman9451a9a2010-07-05 18:12:45 +05301076#ifdef CONFIG_CIFS_FSCACHE
1077 struct fscache_cookie *fscache;
1078#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07001079 struct inode vfs_inode;
1080};
1081
1082static inline struct cifsInodeInfo *
1083CIFS_I(struct inode *inode)
1084{
1085 return container_of(inode, struct cifsInodeInfo, vfs_inode);
1086}
1087
1088static inline struct cifs_sb_info *
1089CIFS_SB(struct super_block *sb)
1090{
1091 return sb->s_fs_info;
1092}
1093
Steve Frenchab2f2182005-09-15 20:44:50 -07001094static inline char CIFS_DIR_SEP(const struct cifs_sb_info *cifs_sb)
Jeremy Allisonac670552005-06-22 17:26:35 -07001095{
1096 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS)
1097 return '/';
1098 else
1099 return '\\';
1100}
Linus Torvalds1da177e2005-04-16 15:20:36 -07001101
Steve Frenchf87d39d2011-05-27 03:50:55 +00001102static inline void
1103convert_delimiter(char *path, char delim)
1104{
Steve French1cc9bd62012-11-29 18:07:51 -06001105 char old_delim, *pos;
Steve Frenchf87d39d2011-05-27 03:50:55 +00001106
1107 if (delim == '/')
1108 old_delim = '\\';
1109 else
1110 old_delim = '/';
1111
Steve French1cc9bd62012-11-29 18:07:51 -06001112 pos = path;
1113 while ((pos = strchr(pos, old_delim)))
1114 *pos = delim;
Steve Frenchf87d39d2011-05-27 03:50:55 +00001115}
1116
Steve Frencha45443472005-08-24 13:59:35 -07001117#ifdef CONFIG_CIFS_STATS
1118#define cifs_stats_inc atomic_inc
1119
Steve French96daf2b2011-05-27 04:34:02 +00001120static inline void cifs_stats_bytes_written(struct cifs_tcon *tcon,
Steve Frencha45443472005-08-24 13:59:35 -07001121 unsigned int bytes)
1122{
1123 if (bytes) {
1124 spin_lock(&tcon->stat_lock);
1125 tcon->bytes_written += bytes;
1126 spin_unlock(&tcon->stat_lock);
1127 }
1128}
1129
Steve French96daf2b2011-05-27 04:34:02 +00001130static inline void cifs_stats_bytes_read(struct cifs_tcon *tcon,
Steve Frencha45443472005-08-24 13:59:35 -07001131 unsigned int bytes)
1132{
1133 spin_lock(&tcon->stat_lock);
1134 tcon->bytes_read += bytes;
1135 spin_unlock(&tcon->stat_lock);
1136}
1137#else
1138
Steve Frenchd38d8c72007-06-28 19:44:13 +00001139#define cifs_stats_inc(field) do {} while (0)
1140#define cifs_stats_bytes_written(tcon, bytes) do {} while (0)
1141#define cifs_stats_bytes_read(tcon, bytes) do {} while (0)
Steve Frencha45443472005-08-24 13:59:35 -07001142
1143#endif
1144
Jeff Layton2b84a36c2011-01-11 07:24:21 -05001145
1146/*
Jeff Layton44d22d82011-10-19 15:29:49 -04001147 * This is the prototype for the mid receive function. This function is for
1148 * receiving the rest of the SMB frame, starting with the WordCount (which is
1149 * just after the MID in struct smb_hdr). Note:
1150 *
1151 * - This will be called by cifsd, with no locks held.
1152 * - The mid will still be on the pending_mid_q.
1153 * - mid->resp_buf will point to the current buffer.
1154 *
1155 * Returns zero on a successful receive, or an error. The receive state in
1156 * the TCP_Server_Info will also be updated.
1157 */
1158typedef int (mid_receive_t)(struct TCP_Server_Info *server,
1159 struct mid_q_entry *mid);
1160
1161/*
1162 * This is the prototype for the mid callback function. This is called once the
1163 * mid has been received off of the socket. When creating one, take special
1164 * care to avoid deadlocks. Things to bear in mind:
Jeff Layton2b84a36c2011-01-11 07:24:21 -05001165 *
Jeff Layton3c1105d2011-05-22 07:09:13 -04001166 * - it will be called by cifsd, with no locks held
1167 * - the mid will be removed from any lists
Jeff Layton2b84a36c2011-01-11 07:24:21 -05001168 */
1169typedef void (mid_callback_t)(struct mid_q_entry *mid);
1170
Linus Torvalds1da177e2005-04-16 15:20:36 -07001171/* one of these for every pending CIFS request to the server */
1172struct mid_q_entry {
1173 struct list_head qhead; /* mids waiting on reply from this server */
Pavel Shilovsky2dc7e1c2011-12-26 22:53:34 +04001174 struct TCP_Server_Info *server; /* server corresponding to this mid */
Pavel Shilovsky7c9421e2012-03-23 14:28:03 -04001175 __u64 mid; /* multiplex id */
1176 __u32 pid; /* process id */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001177 __u32 sequence_number; /* for CIFS signing */
Steve French1047abc2005-10-11 19:58:06 -07001178 unsigned long when_alloc; /* when mid was created */
1179#ifdef CONFIG_CIFS_STATS2
1180 unsigned long when_sent; /* time when smb send finished */
1181 unsigned long when_received; /* when demux complete (taken off wire) */
1182#endif
Jeff Layton44d22d82011-10-19 15:29:49 -04001183 mid_receive_t *receive; /* call receive callback */
Jeff Layton2b84a36c2011-01-11 07:24:21 -05001184 mid_callback_t *callback; /* call completion callback */
1185 void *callback_data; /* general purpose pointer for callback */
Pavel Shilovskyd4e48542012-03-23 14:28:02 -04001186 void *resp_buf; /* pointer to received SMB header */
Pavel Shilovsky7c9421e2012-03-23 14:28:03 -04001187 int mid_state; /* wish this were enum but can not pass to wait_event */
1188 __le16 command; /* smb command code */
1189 bool large_buf:1; /* if valid response, is pointer to large buf */
Steve French4b18f2a2008-04-29 00:06:05 +00001190 bool multiRsp:1; /* multiple trans2 responses for one request */
1191 bool multiEnd:1; /* both received */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001192};
1193
Steve French789e6662011-08-09 18:44:44 +00001194/* Make code in transport.c a little cleaner by moving
1195 update of optional stats into function below */
1196#ifdef CONFIG_CIFS_STATS2
1197
1198static inline void cifs_in_send_inc(struct TCP_Server_Info *server)
1199{
1200 atomic_inc(&server->in_send);
1201}
1202
1203static inline void cifs_in_send_dec(struct TCP_Server_Info *server)
1204{
1205 atomic_dec(&server->in_send);
1206}
1207
1208static inline void cifs_num_waiters_inc(struct TCP_Server_Info *server)
1209{
1210 atomic_inc(&server->num_waiters);
1211}
1212
1213static inline void cifs_num_waiters_dec(struct TCP_Server_Info *server)
1214{
1215 atomic_dec(&server->num_waiters);
1216}
1217
1218static inline void cifs_save_when_sent(struct mid_q_entry *mid)
1219{
1220 mid->when_sent = jiffies;
1221}
1222#else
1223static inline void cifs_in_send_inc(struct TCP_Server_Info *server)
1224{
1225}
1226static inline void cifs_in_send_dec(struct TCP_Server_Info *server)
1227{
1228}
1229
1230static inline void cifs_num_waiters_inc(struct TCP_Server_Info *server)
1231{
1232}
1233
1234static inline void cifs_num_waiters_dec(struct TCP_Server_Info *server)
1235{
1236}
1237
1238static inline void cifs_save_when_sent(struct mid_q_entry *mid)
1239{
1240}
1241#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07001242
Steve Frenchff5dbd92005-08-24 17:10:36 -07001243/* for pending dnotify requests */
1244struct dir_notify_req {
Steve French13cd4b72010-10-07 18:46:32 +00001245 struct list_head lhead;
1246 __le16 Pid;
1247 __le16 PidHigh;
1248 __u16 Mid;
1249 __u16 Tid;
1250 __u16 Uid;
1251 __u16 netfid;
1252 __u32 filter; /* CompletionFilter (for multishot) */
1253 int multishot;
1254 struct file *pfile;
Steve Frenchff5dbd92005-08-24 17:10:36 -07001255};
1256
Steve French366781c2008-01-25 10:12:41 +00001257struct dfs_info3_param {
1258 int flags; /* DFSREF_REFERRAL_SERVER, DFSREF_STORAGE_SERVER*/
Igor Mammedov8aad0182008-02-15 18:21:49 +00001259 int path_consumed;
Steve French366781c2008-01-25 10:12:41 +00001260 int server_type;
1261 int ref_flag;
1262 char *path_name;
1263 char *node_name;
1264};
1265
Jeff Laytoncc0bad72009-06-25 00:56:52 -04001266/*
1267 * common struct for holding inode info when searching for or updating an
1268 * inode with new info
1269 */
1270
1271#define CIFS_FATTR_DFS_REFERRAL 0x1
Jeff Layton0b8f18e2009-07-09 01:46:37 -04001272#define CIFS_FATTR_DELETE_PENDING 0x2
1273#define CIFS_FATTR_NEED_REVAL 0x4
Jeff Layton3d694382010-05-11 14:59:55 -04001274#define CIFS_FATTR_INO_COLLISION 0x8
Jeff Laytoncc0bad72009-06-25 00:56:52 -04001275
1276struct cifs_fattr {
1277 u32 cf_flags;
1278 u32 cf_cifsattrs;
1279 u64 cf_uniqueid;
1280 u64 cf_eof;
1281 u64 cf_bytes;
Jeff Layton20054bd2011-01-07 11:30:27 -05001282 u64 cf_createtime;
Eric W. Biederman4a2c8cf2013-02-06 01:53:25 -08001283 kuid_t cf_uid;
1284 kgid_t cf_gid;
Jeff Laytoncc0bad72009-06-25 00:56:52 -04001285 umode_t cf_mode;
1286 dev_t cf_rdev;
1287 unsigned int cf_nlink;
1288 unsigned int cf_dtype;
1289 struct timespec cf_atime;
1290 struct timespec cf_mtime;
1291 struct timespec cf_ctime;
1292};
1293
Steve French366781c2008-01-25 10:12:41 +00001294static inline void free_dfs_info_param(struct dfs_info3_param *param)
1295{
1296 if (param) {
1297 kfree(param->path_name);
1298 kfree(param->node_name);
1299 kfree(param);
1300 }
1301}
1302
1303static inline void free_dfs_info_array(struct dfs_info3_param *param,
1304 int number_of_items)
1305{
1306 int i;
1307 if ((number_of_items == 0) || (param == NULL))
1308 return;
1309 for (i = 0; i < number_of_items; i++) {
1310 kfree(param[i].path_name);
1311 kfree(param[i].node_name);
1312 }
1313 kfree(param);
1314}
1315
Linus Torvalds1da177e2005-04-16 15:20:36 -07001316#define MID_FREE 0
1317#define MID_REQUEST_ALLOCATED 1
1318#define MID_REQUEST_SUBMITTED 2
1319#define MID_RESPONSE_RECEIVED 4
1320#define MID_RETRY_NEEDED 8 /* session closed while this request out */
Jeff Layton71823ba2011-02-10 08:03:50 -05001321#define MID_RESPONSE_MALFORMED 0x10
Jeff Layton3c1105d2011-05-22 07:09:13 -04001322#define MID_SHUTDOWN 0x20
Steve Frenchec637e32005-12-12 20:53:18 -08001323
1324/* Types of response buffer returned from SendReceive2 */
1325#define CIFS_NO_BUFFER 0 /* Response buffer not returned */
1326#define CIFS_SMALL_BUFFER 1
1327#define CIFS_LARGE_BUFFER 2
1328#define CIFS_IOVEC 4 /* array of response buffers */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001329
Steve French133672e2007-11-13 22:41:37 +00001330/* Type of Request to SendReceive2 */
Jeff Layton77499812011-01-11 07:24:23 -05001331#define CIFS_BLOCKING_OP 1 /* operation can block */
1332#define CIFS_ASYNC_OP 2 /* do not wait for response */
1333#define CIFS_TIMEOUT_MASK 0x003 /* only one of above set in req */
Steve French133672e2007-11-13 22:41:37 +00001334#define CIFS_LOG_ERROR 0x010 /* log NT STATUS if non-zero */
1335#define CIFS_LARGE_BUF_OP 0x020 /* large request buffer */
1336#define CIFS_NO_RESP 0x040 /* no response buffer required */
1337
Pavel Shilovskya891f0f2012-05-23 16:14:34 +04001338/* Type of request operation */
1339#define CIFS_ECHO_OP 0x080 /* echo request */
1340#define CIFS_OBREAK_OP 0x0100 /* oplock break request */
Pavel Shilovskyec2e4522011-12-27 16:12:43 +04001341#define CIFS_NEG_OP 0x0200 /* negotiate request */
1342#define CIFS_OP_MASK 0x0380 /* mask request type */
Pavel Shilovskya891f0f2012-05-23 16:14:34 +04001343
Steve French39798772006-05-31 22:40:51 +00001344/* Security Flags: indicate type of session setup needed */
1345#define CIFSSEC_MAY_SIGN 0x00001
1346#define CIFSSEC_MAY_NTLM 0x00002
1347#define CIFSSEC_MAY_NTLMV2 0x00004
1348#define CIFSSEC_MAY_KRB5 0x00008
1349#ifdef CONFIG_CIFS_WEAK_PW_HASH
1350#define CIFSSEC_MAY_LANMAN 0x00010
1351#define CIFSSEC_MAY_PLNTXT 0x00020
Steve French516897a2007-10-12 19:24:06 +00001352#else
1353#define CIFSSEC_MAY_LANMAN 0
1354#define CIFSSEC_MAY_PLNTXT 0
Steve French39798772006-05-31 22:40:51 +00001355#endif /* weak passwords */
1356#define CIFSSEC_MAY_SEAL 0x00040 /* not supported yet */
Steve Frenchac683922009-05-06 04:16:04 +00001357#define CIFSSEC_MAY_NTLMSSP 0x00080 /* raw ntlmssp with ntlmv2 */
Steve French5815449d2006-02-14 01:36:20 +00001358
Steve French39798772006-05-31 22:40:51 +00001359#define CIFSSEC_MUST_SIGN 0x01001
1360/* note that only one of the following can be set so the
1361result of setting MUST flags more than once will be to
1362require use of the stronger protocol */
1363#define CIFSSEC_MUST_NTLM 0x02002
1364#define CIFSSEC_MUST_NTLMV2 0x04004
1365#define CIFSSEC_MUST_KRB5 0x08008
1366#ifdef CONFIG_CIFS_WEAK_PW_HASH
1367#define CIFSSEC_MUST_LANMAN 0x10010
1368#define CIFSSEC_MUST_PLNTXT 0x20020
Jeff Layton0d3a01f2007-10-16 17:32:19 +00001369#ifdef CONFIG_CIFS_UPCALL
Chuck Ebbert20d17522009-09-15 01:53:21 -04001370#define CIFSSEC_MASK 0xBF0BF /* allows weak security but also krb5 */
Steve Frenchd38d8c72007-06-28 19:44:13 +00001371#else
Chuck Ebbert20d17522009-09-15 01:53:21 -04001372#define CIFSSEC_MASK 0xB70B7 /* current flags supported if weak */
Steve French016ec752007-10-16 18:10:10 +00001373#endif /* UPCALL */
Jeff Layton0d3a01f2007-10-16 17:32:19 +00001374#else /* do not allow weak pw hash */
Steve French88a44122012-01-18 17:13:47 -06001375#define CIFSSEC_MUST_LANMAN 0
1376#define CIFSSEC_MUST_PLNTXT 0
Jeff Layton0d3a01f2007-10-16 17:32:19 +00001377#ifdef CONFIG_CIFS_UPCALL
Steve Frenchac683922009-05-06 04:16:04 +00001378#define CIFSSEC_MASK 0x8F08F /* flags supported if no weak allowed */
Jeff Layton0d3a01f2007-10-16 17:32:19 +00001379#else
Steve Frenchac683922009-05-06 04:16:04 +00001380#define CIFSSEC_MASK 0x87087 /* flags supported if no weak allowed */
Steve French016ec752007-10-16 18:10:10 +00001381#endif /* UPCALL */
Steve French39798772006-05-31 22:40:51 +00001382#endif /* WEAK_PW_HASH */
1383#define CIFSSEC_MUST_SEAL 0x40040 /* not supported yet */
Steve Frenchac683922009-05-06 04:16:04 +00001384#define CIFSSEC_MUST_NTLMSSP 0x80080 /* raw ntlmssp with ntlmv2 */
Steve French39798772006-05-31 22:40:51 +00001385
Jeff Layton896a8fc2013-05-26 07:01:01 -04001386#define CIFSSEC_DEF (CIFSSEC_MAY_SIGN | CIFSSEC_MAY_NTLMV2 | CIFSSEC_MAY_NTLMSSP)
Shirish Pargaonkaref571ca2008-07-24 15:56:05 +00001387#define CIFSSEC_MAX (CIFSSEC_MUST_SIGN | CIFSSEC_MUST_NTLMV2)
Steve Frenchac683922009-05-06 04:16:04 +00001388#define CIFSSEC_AUTH_MASK (CIFSSEC_MAY_NTLM | CIFSSEC_MAY_NTLMV2 | CIFSSEC_MAY_LANMAN | CIFSSEC_MAY_PLNTXT | CIFSSEC_MAY_KRB5 | CIFSSEC_MAY_NTLMSSP)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001389/*
1390 *****************************************************************
1391 * All constants go here
1392 *****************************************************************
1393 */
1394
1395#define UID_HASH (16)
1396
1397/*
1398 * Note that ONE module should define _DECLARE_GLOBALS_HERE to cause the
1399 * following to be declared.
1400 */
1401
1402/****************************************************************************
1403 * Locking notes. All updates to global variables and lists should be
1404 * protected by spinlocks or semaphores.
1405 *
1406 * Spinlocks
1407 * ---------
1408 * GlobalMid_Lock protects:
1409 * list operations on pending_mid_q and oplockQ
1410 * updates to XID counters, multiplex id and SMB sequence numbers
Suresh Jayaraman6573e9b2010-10-18 23:52:18 +05301411 * cifs_file_list_lock protects:
Linus Torvalds1da177e2005-04-16 15:20:36 -07001412 * list operations on tcp and SMB session lists and tCon lists
1413 * f_owner.lock protects certain per file struct operations
1414 * mapping->page_lock protects certain per page operations
1415 *
1416 * Semaphores
1417 * ----------
1418 * sesSem operations on smb session
1419 * tconSem operations on tree connection
Steve Frenchd38d8c72007-06-28 19:44:13 +00001420 * fh_sem file handle reconnection operations
Linus Torvalds1da177e2005-04-16 15:20:36 -07001421 *
1422 ****************************************************************************/
1423
1424#ifdef DECLARE_GLOBALS_HERE
1425#define GLOBAL_EXTERN
1426#else
1427#define GLOBAL_EXTERN extern
1428#endif
1429
Jeff Laytone7ddee92008-11-14 13:44:38 -05001430/*
1431 * the list of TCP_Server_Info structures, ie each of the sockets
Steve Frenchfb396012008-11-13 20:04:07 +00001432 * connecting our client to a distinct server (ip address), is
Jeff Laytone7ddee92008-11-14 13:44:38 -05001433 * chained together by cifs_tcp_ses_list. The list of all our SMB
Steve Frenchfb396012008-11-13 20:04:07 +00001434 * sessions (and from that the tree connections) can be found
Jeff Laytone7ddee92008-11-14 13:44:38 -05001435 * by iterating over cifs_tcp_ses_list
1436 */
1437GLOBAL_EXTERN struct list_head cifs_tcp_ses_list;
1438
Jeff Laytonf1987b42008-11-15 11:12:47 -05001439/*
1440 * This lock protects the cifs_tcp_ses_list, the list of smb sessions per
1441 * tcp session, and the list of tcon's per smb session. It also protects
1442 * the reference counters for the server, smb session, and tcon. Finally,
1443 * changes to the tcon->tidStatus should be done while holding this lock.
1444 */
Suresh Jayaraman3f9bcca2010-10-18 23:29:37 +05301445GLOBAL_EXTERN spinlock_t cifs_tcp_ses_lock;
Steve Frenchddb4cbf2008-11-20 20:00:44 +00001446
1447/*
1448 * This lock protects the cifs_file->llist and cifs_file->flist
1449 * list operations, and updates to some flags (cifs_file->invalidHandle)
1450 * It will be moved to either use the tcon->stat_lock or equivalent later.
1451 * If cifs_tcp_ses_lock and the lock below are both needed to be held, then
1452 * the cifs_tcp_ses_lock must be grabbed first and released last.
1453 */
Jeff Layton44772882010-10-15 15:34:03 -04001454GLOBAL_EXTERN spinlock_t cifs_file_list_lock;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001455
Steve French0eff0e22011-02-24 05:39:23 +00001456#ifdef CONFIG_CIFS_DNOTIFY_EXPERIMENTAL /* unused temporarily */
Steve French99ee4db2007-02-27 05:35:17 +00001457/* Outstanding dir notify requests */
1458GLOBAL_EXTERN struct list_head GlobalDnotifyReqList;
1459/* DirNotify response queue */
1460GLOBAL_EXTERN struct list_head GlobalDnotifyRsp_Q;
Steve French0eff0e22011-02-24 05:39:23 +00001461#endif /* was needed for dnotify, and will be needed for inotify when VFS fix */
Steve Frenchff5dbd92005-08-24 17:10:36 -07001462
Linus Torvalds1da177e2005-04-16 15:20:36 -07001463/*
1464 * Global transaction id (XID) information
1465 */
1466GLOBAL_EXTERN unsigned int GlobalCurrentXid; /* protected by GlobalMid_Sem */
Steve French254e55e2006-06-04 05:53:15 +00001467GLOBAL_EXTERN unsigned int GlobalTotalActiveXid; /* prot by GlobalMid_Sem */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001468GLOBAL_EXTERN unsigned int GlobalMaxActiveXid; /* prot by GlobalMid_Sem */
Steve French254e55e2006-06-04 05:53:15 +00001469GLOBAL_EXTERN spinlock_t GlobalMid_Lock; /* protects above & list operations */
1470 /* on midQ entries */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001471/*
1472 * Global counters, updated atomically
1473 */
1474GLOBAL_EXTERN atomic_t sesInfoAllocCount;
1475GLOBAL_EXTERN atomic_t tconInfoAllocCount;
1476GLOBAL_EXTERN atomic_t tcpSesAllocCount;
1477GLOBAL_EXTERN atomic_t tcpSesReconnectCount;
1478GLOBAL_EXTERN atomic_t tconInfoReconnectCount;
1479
Steve Frenchaaa9bbe2008-05-23 17:38:32 +00001480/* Various Debug counters */
Steve French4498eed52005-12-03 13:58:57 -08001481GLOBAL_EXTERN atomic_t bufAllocCount; /* current number allocated */
1482#ifdef CONFIG_CIFS_STATS2
1483GLOBAL_EXTERN atomic_t totBufAllocCount; /* total allocated over all time */
1484GLOBAL_EXTERN atomic_t totSmBufAllocCount;
1485#endif
1486GLOBAL_EXTERN atomic_t smBufAllocCount;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001487GLOBAL_EXTERN atomic_t midCount;
1488
1489/* Misc globals */
Jeff Layton5e500ed2012-05-16 07:13:17 -04001490GLOBAL_EXTERN bool enable_oplocks; /* enable or disable oplocks */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001491GLOBAL_EXTERN unsigned int lookupCacheEnabled;
Jeff Layton04912d62010-04-24 07:57:45 -04001492GLOBAL_EXTERN unsigned int global_secflags; /* if on, session setup sent
Linus Torvalds1da177e2005-04-16 15:20:36 -07001493 with more secure ntlmssp2 challenge/resp */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001494GLOBAL_EXTERN unsigned int sign_CIFS_PDUs; /* enable smb packet signing */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001495GLOBAL_EXTERN unsigned int linuxExtEnabled;/*enable Linux/Unix CIFS extensions*/
1496GLOBAL_EXTERN unsigned int CIFSMaxBufSize; /* max size not including hdr */
1497GLOBAL_EXTERN unsigned int cifs_min_rcv; /* min size of big ntwrk buf pool */
1498GLOBAL_EXTERN unsigned int cifs_min_small; /* min size of small buf pool */
1499GLOBAL_EXTERN unsigned int cifs_max_pending; /* MAX requests at once to server*/
1500
Shirish Pargaonkar21fed0d2011-08-09 14:30:48 -05001501#ifdef CONFIG_CIFS_ACL
Shirish Pargaonkar4d79dba2011-04-27 23:34:35 -05001502GLOBAL_EXTERN struct rb_root uidtree;
1503GLOBAL_EXTERN struct rb_root gidtree;
1504GLOBAL_EXTERN spinlock_t siduidlock;
1505GLOBAL_EXTERN spinlock_t sidgidlock;
Shirish Pargaonkar21fed0d2011-08-09 14:30:48 -05001506GLOBAL_EXTERN struct rb_root siduidtree;
1507GLOBAL_EXTERN struct rb_root sidgidtree;
1508GLOBAL_EXTERN spinlock_t uidsidlock;
1509GLOBAL_EXTERN spinlock_t gidsidlock;
1510#endif /* CONFIG_CIFS_ACL */
Shirish Pargaonkar4d79dba2011-04-27 23:34:35 -05001511
Tejun Heo9b646972010-07-20 22:09:02 +02001512void cifs_oplock_break(struct work_struct *work);
Linus Torvalds3b7433b2010-08-07 12:42:58 -07001513
Jeff Layton3bc303c2009-09-21 06:47:50 -04001514extern const struct slow_work_ops cifs_oplock_break_ops;
Jeff Laytonda472fc2012-03-23 14:40:53 -04001515extern struct workqueue_struct *cifsiod_wq;
Suresh Jayaramanabd2e442010-06-22 20:52:50 +05301516
Pavel Shilovsky2dc7e1c2011-12-26 22:53:34 +04001517extern mempool_t *cifs_mid_poolp;
1518
Jeff Layton23db65f2012-05-15 12:20:51 -04001519/* Operations for different SMB versions */
1520#define SMB1_VERSION_STRING "1.0"
1521extern struct smb_version_operations smb1_operations;
1522extern struct smb_version_values smb1_values;
Steve Frenche4aa25e2012-10-01 12:26:22 -05001523#define SMB20_VERSION_STRING "2.0"
Pavel Shilovsky53ef1012013-09-05 16:11:28 +04001524extern struct smb_version_operations smb20_operations;
Steve Frenche4aa25e2012-10-01 12:26:22 -05001525extern struct smb_version_values smb20_values;
Steve French1080ef72011-02-24 18:07:19 +00001526#define SMB21_VERSION_STRING "2.1"
1527extern struct smb_version_operations smb21_operations;
1528extern struct smb_version_values smb21_values;
Steve Frenche4aa25e2012-10-01 12:26:22 -05001529#define SMB30_VERSION_STRING "3.0"
Steve French38107d42012-12-08 22:08:06 -06001530extern struct smb_version_operations smb30_operations;
Steve Frenche4aa25e2012-10-01 12:26:22 -05001531extern struct smb_version_values smb30_values;
Steve French20b6d8b2013-06-12 22:48:41 -05001532#define SMB302_VERSION_STRING "3.02"
1533/*extern struct smb_version_operations smb302_operations;*/ /* not needed yet */
1534extern struct smb_version_values smb302_values;
Suresh Jayaramanabd2e442010-06-22 20:52:50 +05301535#endif /* _CIFS_GLOB_H */